S. Vietnam, Prov. Lam Dong, 31 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village (N 12° 08′, E 108° 39′). Closed primary broadleaved mt forest on NW macroslope of Bi Dup mt system at 1850-1950 m alt. Terrestrial and epilitic fern on on steep slopes of very wet deep stream canyon. Very common. VH 2949 20.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)